perhaps they are wax moth grubs. They will eat the wax and form webbing and cocoons.
It sounds like you have a very weak hive. Are you feeding them? If not, i would think that feeding them may help them build up faster and increase their numbers enough so they will be able to remove the grubs and the roaches. If you have another hive that is strong, take a couple of frames of brood and eggs and putting them in the weak hive to give them a boost.
Also, try to hand pick the grubs and cockroaches out of the hive. If you see the tan or brown roach egg sacks, remove those too. That should help a bit too.
Good luck,
Jason
It sounds like you have a very weak hive. Are you feeding them? If not, i would think that feeding them may help them build up faster and increase their numbers enough so they will be able to remove the grubs and the roaches. If you have another hive that is strong, take a couple of frames of brood and eggs and putting them in the weak hive to give them a boost.
Also, try to hand pick the grubs and cockroaches out of the hive. If you see the tan or brown roach egg sacks, remove those too. That should help a bit too.
Good luck,
Jason